The ND's are great cars, hard to beat from a fun factor stand point. I'm surprised you thought the interior on the ND is nicer than a BRZ?
I just bought a '17 BRZ and nearly bought an ND instead, but I thought the Club interiors were kinda crummy. I agree with all your other ND pro's though, as well as the BRZ pro's. I wish the BRZ powerband was more like the ND in the mid-range, that car never feels like it is bogging or out of grunt.
This is my second twin (also had a '13 FRS), the only other car I have bought twice was a Miata